package com.zxc.reggie.filter;


import com.alibaba.druid.support.json.JSONUtils;
import com.alibaba.fastjson.JSON;
import com.zxc.reggie.common.BaseContext;
import com.zxc.reggie.common.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.util.AntPathMatcher;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@Slf4j

@WebFilter(filterName = "LoginCheckFilter", urlPatterns = "/*")

public class LoginCheckFilter implements Filter {

    public final static AntPathMatcher PATH_MATCHER = new AntPathMatcher();

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        String requestURI = request.getRequestURI();
        log.info("进入过滤器:{}", requestURI);

        String[] urls = new String[]{
                "/employee/login",
                "/employee/logout",
                "/backend/**",
                "/front/**",
                "/user/sendMsg",
                "/user/login","/common/**",
        };

        boolean check = check(urls, requestURI);
        if (check) {

            filterChain.doFilter(request, response);
            return;
        }
        Long employeeId = (Long) request.getSession().getAttribute("employee");

        if (employeeId != null) {
            BaseContext.setCurrentId(employeeId);
            filterChain.doFilter(request, response);
            return;
        }
        Long userId = (Long) request.getSession().getAttribute("user");

        if (userId != null) {
            BaseContext.setCurrentId(userId);
            filterChain.doFilter(request, response);
            return;
        }


        response.getWriter().write(JSON.toJSONString(R.error("NOTLOGIN")));
    }

    public boolean check(String[] urls, String requestURI) {
        for (String url : urls) {

            boolean match = PATH_MATCHER.match(url, requestURI);
            if (match) {
                return true;
            }
        }
        return false;
    }


}
